General

The planet Omicron Persei 8 is situated about 1000 lightyears from Earth, in orbit around Omicron Persei. It's surface seems to consist mainly of deserts. It is the home world and capital of the warlike Omicronians, the single greatest threat Earth and the entire Democratic Order of Planets (DOOP) are facing. It seems to have a small, asteroid-like moonlet, possibly it has three moons, as a remark by Lrrr, the ruler of the planet, suggests.

Lrrr: One of these days, Ndnd... [points into the air] Bang! Zoom! - Straight to the third moon of Omicron Persei 8!

Neighboring Planets

The Omicron Persei system contains at least 12 planets, as Omicron Persei 12 has been mentioned and the number indicates which planet in the system is being refered to, with the highest numbers being furthest from their stars. Omicron Persei 8 is neighbored by the planets Omicron Persei 7 and Omicron Persei 9 as referenced by Ndnd in the episode When Aliens Attack

Ndnd: It is true what they say... Women are from Omicron Persei 7, men are from Omicron Persei 9.